000
AXPZ20 KNHC 240344
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI MAR 24 2006

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0315 UTC.

...ITCZ...

ITCZ AXIS 9N83W 6N100W 4N107W 5N120W 5N140W. NO SIGNIFICANT 
CONVECTION.

...DISCUSSION...

PACIFIC N OF 15N...
A MIDDLE TO UPPER LEVEL RIDGE-TROUGH PATTERN PREVAILS N OF 15N 
WITH A TROUGH OFF THE COAST OF THE BAJA PENINSULA BETWEEN 110W 
AND 120W AND A BROAD/FLAT RIDGE W OF 125W.  THE CORE OF THE 
STRONGEST WESTERLIES AND ASSOCIATED DYNAMICS REMAIN N OF THE 
AREA IN ASSOCIATION WITH A STRONG TROUGH MOVING ONSHORE OF THE W 
UNITED STATES. ATTENDANT FRONTAL BOUNDARY HAS BECOME STATIONARY 
FROM 31N136W TO 30N140W. WITH LITTLE IN THE WAY OF UPPER 
SUPPORT...ONLY A NARROW BAND OF OVERCAST LOW CLOUDINESS AND 
SCATTERED SHOWERS LIE ALONG THE FRONT. THE FRONT WILL GRADUALLY 
WEAKEN OVER THE NEXT 24 HOURS. ELSEWHERE AT THE SURFACE...HIGH 
PRESSURE DOMINATES MUCH OF THE SUBTROPICAL PACIFIC WITH A 1025 
MB HIGH NEAR 30N125W AND ASSOCIATED RIDGE EXTENDING SE TO 
17N105W. 

PACIFIC S OF 15N...
WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE AND DRY/STABLE 
AIR ALOFT OVER THE DEEP TROPICS WITH MOSTLY MODERATE WESTERLY 
FLOW AT THE MIDDLE AND UPPER LEVELS. AS A RESULT...THERE IS NO 
SIGNIFICANT ITCZ CONVECTION AT THIS TIME.  

MEXICO....
STRONG MIDDLE TO UPPER LEVEL TROUGH EXTENDS FROM THE E UNITED 
STATES SWD OVER THE GULF OF MEXICO.  ASSOCIATED CONFLUENT FLOW W 
OF THE TROUGH IS PRODUCING STRONG SUBSIDENCE AND DRY/STABLE 
CONDITIONS ALOFT OVER N PORTIONS OF MEXICO GENERALLY POLEWARD OF 
23N. HOWEVER...THIS AIRMASS IS BEING OVERSPREAD BY HIGH 
CLOUDINESS AND MOISTURE FROM THE W IN ASSOCIATION WITH A TROUGH 
W OF THE BAJA PENINSULA. AT THE SURFACE...COLD FRONT CONTINUES 
TO SURGE SWD ALONG THE E SLOPES OF THE SIERRA MADRE MOUNTAINS 
WITH THE LEADING EDGE NOW NEAR THE ISTHMUS OF TEHUANTEPEC. 
STRONG NLY FLOW BEHIND THE FRONT IS EXPECTED TO PUSH THROUGH THE 
ISTHMUS PRODUCING GALE FORCE WINDS OVER THE GULF OF TEHUANTEPEC 
WITHIN THE NEXT 3 TO 6 HOURS.  PEAK WINDS OF 45 KT AND SEAS TO 
18 FT ARE EXPECTED LATER FRIDAY.  OVERCAST LOW CLOUDINESS AND 
SHOWERS ARE LOCATED OVER THE LOW COUNTRY OF E MEXICO N OF THE 
FRONT. 

$$
RHOME